NullStream.h

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#pragma once
 
#include <streambuf>
#include <ostream>
#include <sstream>
 
class NullBuffer : public std::streambuf {
    protected:
        int overflow(int c) override {
            return traits_type::not_eof(c); // Indicate success, but discard the character
        }
};
 
class NullOStream : public std::ostream {
    private:
        NullBuffer null_buffer;
    public:
        NullOStream() : std::ostream(&null_buffer) {}
};
 
class NullOStringStream : public std::ostringstream {
    public:
        NullOStringStream() = default;
 
        template <typename T>
        NullOStringStream& operator<<(const T& value) {
            // Do nothing, effectively discarding the output
            return *this;
        }
 
        NullOStringStream& write(const char* s, std::streamsize n) {
            // Do nothing, effectively discarding the output
            return *this;
        }
 
        // Override str() to return an empty string
        inline std::string str() const {
            return ""; // Always return an empty string
        }
};